Lady’s Gitweb - Gitweb/blob - gitweb.cgi

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 binmode STDOUT, ':utf8';
  18
  19 our $cgi = new CGI;
  20 our $version = "267";
  21 our $my_url = $cgi->url();
  22 our $my_uri = $cgi->url(-absolute => 1);
  23 our $rss_link = "";
  24
  25 # core git executable to use
  26 # this can just be "git" if your webserver has a sensible PATH
  27 our $GIT = "/usr/bin/git";
  28
  29 # absolute fs-path which will be prepended to the project path
  30 #our $projectroot = "/pub/scm";
  31 our $projectroot = "/home/kay/public_html/pub/scm";
  32
  33 # version of the core git binary
  34 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
  35
  36 # location for temporary files needed for diffs
  37 our $git_temp = "/tmp/gitweb";
  38 if (! -d $git_temp) {
  39         mkdir($git_temp, 0700) || die_error("Couldn't mkdir $git_temp");
  40 }
  41
  42 # target of the home link on top of all pages
  43 our $home_link = $my_uri;
  44
  45 # name of your site or organization to appear in page titles
  46 # replace this with something more descriptive for clearer bookmarks
  47 our $site_name = $ENV{'SERVER_NAME'} || "Untitled";
  48
  49 # html text to include at home page
  50 our $home_text = "indextext.html";
  51
  52 # URI of default stylesheet
  53 our $stylesheet = "gitweb.css";
  54
  55 # source of projects list
  56 #our $projects_list = $projectroot;
  57 our $projects_list = "index/index.aux";
  58
  59 # default blob_plain mimetype and default charset for text/plain blob
  60 our $default_blob_plain_mimetype = 'text/plain';
  61 our $default_text_plain_charset  = undef;
  62
  63 # file to use for guessing MIME types before trying /etc/mime.types
  64 # (relative to the current git repository)
  65 our $mimetypes_file = undef;
  66
  67 # input validation and dispatch
  68 our $action = $cgi->param('a');
  69 if (defined $action) {
  70         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
  71                 undef $action;
  72                 die_error(undef, "Invalid action parameter.");
  73         }
  74         if ($action eq "git-logo.png") {
  75                 git_logo();
  76                 exit;
  77         } elsif ($action eq "opml") {
  78                 git_opml();
  79                 exit;
  80         }
  81 }
  82
  83 our $order = $cgi->param('o');
  84 if (defined $order) {
  85         if ($order =~ m/[^0-9a-zA-Z_]/) {
  86                 undef $order;
  87                 die_error(undef, "Invalid order parameter.");
  88         }
  89 }
  90
  91 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
  92 if (defined $project) {
  93         $project =~ s|^/||; $project =~ s|/$||;
  94         $project = validate_input($project);
  95         if (!defined($project)) {
  96                 die_error(undef, "Invalid project parameter.");
  97         }
  98         if (!(-d "$projectroot/$project")) {
  99                 undef $project;
 100                 die_error(undef, "No such directory.");
 101         }
 102         if (!(-e "$projectroot/$project/HEAD")) {
 103                 undef $project;
 104                 die_error(undef, "No such project.");
 105         }
 106         $rss_link = "<link rel=\"alternate\" title=\"" . esc_param($project) . " log\" href=\"" .
 107                     "$my_uri?" . esc_param("p=$project;a=rss") . "\" type=\"application/rss+xml\"/>";
 108         $ENV{'GIT_DIR'} = "$projectroot/$project";
 109 } else {
 110         git_project_list();
 111         exit;
 112 }
 113
 114 our $file_name = $cgi->param('f');
 115 if (defined $file_name) {
 116         $file_name = validate_input($file_name);
 117         if (!defined($file_name)) {
 118                 die_error(undef, "Invalid file parameter.");
 119         }
 120 }
 121
 122 our $hash = $cgi->param('h');
 123 if (defined $hash) {
 124         $hash = validate_input($hash);
 125         if (!defined($hash)) {
 126                 die_error(undef, "Invalid hash parameter.");
 127         }
 128 }
 129
 130 our $hash_parent = $cgi->param('hp');
 131 if (defined $hash_parent) {
 132         $hash_parent = validate_input($hash_parent);
 133         if (!defined($hash_parent)) {
 134                 die_error(undef, "Invalid hash parent parameter.");
 135         }
 136 }
 137
 138 our $hash_base = $cgi->param('hb');
 139 if (defined $hash_base) {
 140         $hash_base = validate_input($hash_base);
 141         if (!defined($hash_base)) {
 142                 die_error(undef, "Invalid hash base parameter.");
 143         }
 144 }
 145
 146 our $page = $cgi->param('pg');
 147 if (defined $page) {
 148         if ($page =~ m/[^0-9]$/) {
 149                 undef $page;
 150                 die_error(undef, "Invalid page parameter.");
 151         }
 152 }
 153
 154 our $searchtext = $cgi->param('s');
 155 if (defined $searchtext) {
 156         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 157                 undef $searchtext;
 158                 die_error(undef, "Invalid search parameter.");
 159         }
 160         $searchtext = quotemeta $searchtext;
 161 }
 162
 163 # dispatch
 164 my %actions = (
 165         "blame" => \&git_blame2,
 166         "blobdiff" => \&git_blobdiff,
 167         "blobdiff_plain" => \&git_blobdiff_plain,
 168         "blob" => \&git_blob,
 169         "blob_plain" => \&git_blob_plain,
 170         "commitdiff" => \&git_commitdiff,
 171         "commitdiff_plain" => \&git_commitdiff_plain,
 172         "commit" => \&git_commit,
 173         "heads" => \&git_heads,
 174         "history" => \&git_history,
 175         "log" => \&git_log,
 176         "rss" => \&git_rss,
 177         "search" => \&git_search,
 178         "shortlog" => \&git_shortlog,
 179         "summary" => \&git_summary,
 180         "tag" => \&git_tag,
 181         "tags" => \&git_tags,
 182         "tree" => \&git_tree,
 183 );
 184
 185 $action = 'summary' if (!defined($action));
 186 if (!defined($actions{$action})) {
 187         undef $action;
 188         die_error(undef, "Unknown action.");
 189 }
 190 $actions{$action}->();
 191 exit;
 192
 193 ## ======================================================================
 194 ## validation, quoting/unquoting and escaping
 195
 196 sub validate_input {
 197         my $input = shift;
 198
 199         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 200                 return $input;
 201         }
 202         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 203                 return undef;
 204         }
 205         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 206                 return undef;
 207         }
 208         return $input;
 209 }
 210
 211 # quote unsafe chars, but keep the slash, even when it's not
 212 # correct, but quoted slashes look too horrible in bookmarks
 213 sub esc_param {
 214         my $str = shift;
 215         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 216         $str =~ s/\+/%2B/g;
 217         $str =~ s/ /\+/g;
 218         return $str;
 219 }
 220
 221 # replace invalid utf8 character with SUBSTITUTION sequence
 222 sub esc_html {
 223         my $str = shift;
 224         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 225         $str = escapeHTML($str);
 226         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 227         return $str;
 228 }
 229
 230 # git may return quoted and escaped filenames
 231 sub unquote {
 232         my $str = shift;
 233         if ($str =~ m/^"(.*)"$/) {
 234                 $str = $1;
 235                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 236         }
 237         return $str;
 238 }
 239
 240 ## ----------------------------------------------------------------------
 241 ## HTML aware string manipulation
 242
 243 sub chop_str {
 244         my $str = shift;
 245         my $len = shift;
 246         my $add_len = shift || 10;
 247
 248         # allow only $len chars, but don't cut a word if it would fit in $add_len
 249         # if it doesn't fit, cut it if it's still longer than the dots we would add
 250         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 251         my $body = $1;
 252         my $tail = $2;
 253         if (length($tail) > 4) {
 254                 $tail = " ...";
 255                 $body =~ s/&[^;]*$//; # remove chopped character entities
 256         }
 257         return "$body$tail";
 258 }
 259
 260 ## ----------------------------------------------------------------------
 261 ## functions returning short strings
 262
 263 # CSS class for given age value (in seconds)
 264 sub age_class {
 265         my $age = shift;
 266
 267         if ($age < 60*60*2) {
 268                 return "age0";
 269         } elsif ($age < 60*60*24*2) {
 270                 return "age1";
 271         } else {
 272                 return "age2";
 273         }
 274 }
 275
 276 # convert age in seconds to "nn units ago" string
 277 sub age_string {
 278         my $age = shift;
 279         my $age_str;
 280
 281         if ($age > 60*60*24*365*2) {
 282                 $age_str = (int $age/60/60/24/365);
 283                 $age_str .= " years ago";
 284         } elsif ($age > 60*60*24*(365/12)*2) {
 285                 $age_str = int $age/60/60/24/(365/12);
 286                 $age_str .= " months ago";
 287         } elsif ($age > 60*60*24*7*2) {
 288                 $age_str = int $age/60/60/24/7;
 289                 $age_str .= " weeks ago";
 290         } elsif ($age > 60*60*24*2) {
 291                 $age_str = int $age/60/60/24;
 292                 $age_str .= " days ago";
 293         } elsif ($age > 60*60*2) {
 294                 $age_str = int $age/60/60;
 295                 $age_str .= " hours ago";
 296         } elsif ($age > 60*2) {
 297                 $age_str = int $age/60;
 298                 $age_str .= " min ago";
 299         } elsif ($age > 2) {
 300                 $age_str = int $age;
 301                 $age_str .= " sec ago";
 302         } else {
 303                 $age_str .= " right now";
 304         }
 305         return $age_str;
 306 }
 307
 308 # convert file mode in octal to symbolic file mode string
 309 sub mode_str {
 310         my $mode = oct shift;
 311
 312         if (S_ISDIR($mode & S_IFMT)) {
 313                 return 'drwxr-xr-x';
 314         } elsif (S_ISLNK($mode)) {
 315                 return 'lrwxrwxrwx';
 316         } elsif (S_ISREG($mode)) {
 317                 # git cares only about the executable bit
 318                 if ($mode & S_IXUSR) {
 319                         return '-rwxr-xr-x';
 320                 } else {
 321                         return '-rw-r--r--';
 322                 };
 323         } else {
 324                 return '----------';
 325         }
 326 }
 327
 328 # convert file mode in octal to file type string
 329 sub file_type {
 330         my $mode = oct shift;
 331
 332         if (S_ISDIR($mode & S_IFMT)) {
 333                 return "directory";
 334         } elsif (S_ISLNK($mode)) {
 335                 return "symlink";
 336         } elsif (S_ISREG($mode)) {
 337                 return "file";
 338         } else {
 339                 return "unknown";
 340         }
 341 }
 342
 343 ## ----------------------------------------------------------------------
 344 ## functions returning short HTML fragments, or transforming HTML fragments
 345 ## which don't beling to other sections
 346
 347 # format line of commit message or tag comment
 348 sub format_log_line_html {
 349         my $line = shift;
 350
 351         $line = esc_html($line);
 352         $line =~ s/ /&nbsp;/g;
 353         if ($line =~ m/([0-9a-fA-F]{40})/) {
 354                 my $hash_text = $1;
 355                 if (git_get_type($hash_text) eq "commit") {
 356                         my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
 357                         $line =~ s/$hash_text/$link/;
 358                 }
 359         }
 360         return $line;
 361 }
 362
 363 # format marker of refs pointing to given object
 364 sub git_get_referencing {
 365         my ($refs, $id) = @_;
 366
 367         if (defined $refs->{$id}) {
 368                 return ' <span class="tag">' . esc_html($refs->{$id}) . '</span>';
 369         } else {
 370                 return "";
 371         }
 372 }
 373
 374 ## ----------------------------------------------------------------------
 375 ## git utility subroutines, invoking git commands
 376
 377 # get HEAD ref of given project as hash
 378 sub git_read_head {
 379         my $project = shift;
 380         my $oENV = $ENV{'GIT_DIR'};
 381         my $retval = undef;
 382         $ENV{'GIT_DIR'} = "$projectroot/$project";
 383         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 384                 my $head = <$fd>;
 385                 close $fd;
 386                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 387                         $retval = $1;
 388                 }
 389         }
 390         if (defined $oENV) {
 391                 $ENV{'GIT_DIR'} = $oENV;
 392         }
 393         return $retval;
 394 }
 395
 396 # get type of given object
 397 sub git_get_type {
 398         my $hash = shift;
 399
 400         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 401         my $type = <$fd>;
 402         close $fd or return;
 403         chomp $type;
 404         return $type;
 405 }
 406
 407 sub git_get_project_config {
 408         my $key = shift;
 409
 410         return unless ($key);
 411         $key =~ s/^gitweb\.//;
 412         return if ($key =~ m/\W/);
 413
 414         my $val = qx($GIT repo-config --get gitweb.$key);
 415         return ($val);
 416 }
 417
 418 sub git_get_project_config_bool {
 419         my $val = git_get_project_config (@_);
 420         if ($val and $val =~ m/true|yes|on/) {
 421                 return (1);
 422         }
 423         return; # implicit false
 424 }
 425
 426 # get hash of given path at given ref
 427 sub git_get_hash_by_path {
 428         my $base = shift;
 429         my $path = shift || return undef;
 430
 431         my $tree = $base;
 432
 433         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 434                 or die_error(undef, "Open git-ls-tree failed.");
 435         my $line = <$fd>;
 436         close $fd or return undef;
 437
 438         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 439         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 440         return $3;
 441 }
 442
 443 ## ......................................................................
 444 ## git utility functions, directly accessing git repository
 445
 446 # assumes that PATH is not symref
 447 sub git_read_hash {
 448         my $path = shift;
 449
 450         open my $fd, "$projectroot/$path" or return undef;
 451         my $head = <$fd>;
 452         close $fd;
 453         chomp $head;
 454         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 455                 return $head;
 456         }
 457 }
 458
 459 sub git_read_description {
 460         my $path = shift;
 461
 462         open my $fd, "$projectroot/$path/description" or return undef;
 463         my $descr = <$fd>;
 464         close $fd;
 465         chomp $descr;
 466         return $descr;
 467 }
 468
 469 sub git_read_projects {
 470         my @list;
 471
 472         if (-d $projects_list) {
 473                 # search in directory
 474                 my $dir = $projects_list;
 475                 opendir my ($dh), $dir or return undef;
 476                 while (my $dir = readdir($dh)) {
 477                         if (-e "$projectroot/$dir/HEAD") {
 478                                 my $pr = {
 479                                         path => $dir,
 480                                 };
 481                                 push @list, $pr
 482                         }
 483                 }
 484                 closedir($dh);
 485         } elsif (-f $projects_list) {
 486                 # read from file(url-encoded):
 487                 # 'git%2Fgit.git Linus+Torvalds'
 488                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 489                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 490                 open my ($fd), $projects_list or return undef;
 491                 while (my $line = <$fd>) {
 492                         chomp $line;
 493                         my ($path, $owner) = split ' ', $line;
 494                         $path = unescape($path);
 495                         $owner = unescape($owner);
 496                         if (!defined $path) {
 497                                 next;
 498                         }
 499                         if (-e "$projectroot/$path/HEAD") {
 500                                 my $pr = {
 501                                         path => $path,
 502                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 503                                 };
 504                                 push @list, $pr
 505                         }
 506                 }
 507                 close $fd;
 508         }
 509         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 510         return @list;
 511 }
 512
 513 sub read_info_ref {
 514         my $type = shift || "";
 515         my %refs;
 516         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 517         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 518         open my $fd, "$projectroot/$project/info/refs" or return;
 519         while (my $line = <$fd>) {
 520                 chomp $line;
 521                 # attention: for $type == "" it saves only last path part of ref name
 522                 # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
 523                 if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
 524                         if (defined $refs{$1}) {
 525                                 $refs{$1} .= " / $2";
 526                         } else {
 527                                 $refs{$1} = $2;
 528                         }
 529                 }
 530         }
 531         close $fd or return;
 532         return \%refs;
 533 }
 534
 535 ## ----------------------------------------------------------------------
 536 ## parse to hash functions
 537
 538 sub date_str {
 539         my $epoch = shift;
 540         my $tz = shift || "-0000";
 541
 542         my %date;
 543         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 544         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 545         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 546         $date{'hour'} = $hour;
 547         $date{'minute'} = $min;
 548         $date{'mday'} = $mday;
 549         $date{'day'} = $days[$wday];
 550         $date{'month'} = $months[$mon];
 551         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 552         $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 553
 554         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 555         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 556         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 557         $date{'hour_local'} = $hour;
 558         $date{'minute_local'} = $min;
 559         $date{'tz_local'} = $tz;
 560         return %date;
 561 }
 562
 563 sub git_read_tag {
 564         my $tag_id = shift;
 565         my %tag;
 566         my @comment;
 567
 568         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 569         $tag{'id'} = $tag_id;
 570         while (my $line = <$fd>) {
 571                 chomp $line;
 572                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 573                         $tag{'object'} = $1;
 574                 } elsif ($line =~ m/^type (.+)$/) {
 575                         $tag{'type'} = $1;
 576                 } elsif ($line =~ m/^tag (.+)$/) {
 577                         $tag{'name'} = $1;
 578                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 579                         $tag{'author'} = $1;
 580                         $tag{'epoch'} = $2;
 581                         $tag{'tz'} = $3;
 582                 } elsif ($line =~ m/--BEGIN/) {
 583                         push @comment, $line;
 584                         last;
 585                 } elsif ($line eq "") {
 586                         last;
 587                 }
 588         }
 589         push @comment, <$fd>;
 590         $tag{'comment'} = \@comment;
 591         close $fd or return;
 592         if (!defined $tag{'name'}) {
 593                 return
 594         };
 595         return %tag
 596 }
 597
 598 sub git_read_commit {
 599         my $commit_id = shift;
 600         my $commit_text = shift;
 601
 602         my @commit_lines;
 603         my %co;
 604
 605         if (defined $commit_text) {
 606                 @commit_lines = @$commit_text;
 607         } else {
 608                 $/ = "\0";
 609                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
 610                 @commit_lines = split '\n', <$fd>;
 611                 close $fd or return;
 612                 $/ = "\n";
 613                 pop @commit_lines;
 614         }
 615         my $header = shift @commit_lines;
 616         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 617                 return;
 618         }
 619         ($co{'id'}, my @parents) = split ' ', $header;
 620         $co{'parents'} = \@parents;
 621         $co{'parent'} = $parents[0];
 622         while (my $line = shift @commit_lines) {
 623                 last if $line eq "\n";
 624                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 625                         $co{'tree'} = $1;
 626                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 627                         $co{'author'} = $1;
 628                         $co{'author_epoch'} = $2;
 629                         $co{'author_tz'} = $3;
 630                         if ($co{'author'} =~ m/^([^<]+) </) {
 631                                 $co{'author_name'} = $1;
 632                         } else {
 633                                 $co{'author_name'} = $co{'author'};
 634                         }
 635                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 636                         $co{'committer'} = $1;
 637                         $co{'committer_epoch'} = $2;
 638                         $co{'committer_tz'} = $3;
 639                         $co{'committer_name'} = $co{'committer'};
 640                         $co{'committer_name'} =~ s/ <.*//;
 641                 }
 642         }
 643         if (!defined $co{'tree'}) {
 644                 return;
 645         };
 646
 647         foreach my $title (@commit_lines) {
 648                 $title =~ s/^    //;
 649                 if ($title ne "") {
 650                         $co{'title'} = chop_str($title, 80, 5);
 651                         # remove leading stuff of merges to make the interesting part visible
 652                         if (length($title) > 50) {
 653                                 $title =~ s/^Automatic //;
 654                                 $title =~ s/^merge (of|with) /Merge ... /i;
 655                                 if (length($title) > 50) {
 656                                         $title =~ s/(http|rsync):\/\///;
 657                                 }
 658                                 if (length($title) > 50) {
 659                                         $title =~ s/(master|www|rsync)\.//;
 660                                 }
 661                                 if (length($title) > 50) {
 662                                         $title =~ s/kernel.org:?//;
 663                                 }
 664                                 if (length($title) > 50) {
 665                                         $title =~ s/\/pub\/scm//;
 666                                 }
 667                         }
 668                         $co{'title_short'} = chop_str($title, 50, 5);
 669                         last;
 670                 }
 671         }
 672         # remove added spaces
 673         foreach my $line (@commit_lines) {
 674                 $line =~ s/^    //;
 675         }
 676         $co{'comment'} = \@commit_lines;
 677
 678         my $age = time - $co{'committer_epoch'};
 679         $co{'age'} = $age;
 680         $co{'age_string'} = age_string($age);
 681         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 682         if ($age > 60*60*24*7*2) {
 683                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 684                 $co{'age_string_age'} = $co{'age_string'};
 685         } else {
 686                 $co{'age_string_date'} = $co{'age_string'};
 687                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 688         }
 689         return %co;
 690 }
 691
 692 ## ......................................................................
 693 ## parse to array of hashes functions
 694
 695 sub git_read_refs {
 696         my $ref_dir = shift;
 697         my @reflist;
 698
 699         my @refs;
 700         opendir my $dh, "$projectroot/$project/$ref_dir";
 701         while (my $dir = readdir($dh)) {
 702                 if ($dir =~ m/^\./) {
 703                         next;
 704                 }
 705                 if (-d "$projectroot/$project/$ref_dir/$dir") {
 706                         opendir my $dh2, "$projectroot/$project/$ref_dir/$dir";
 707                         my @subdirs = grep !m/^\./, readdir $dh2;
 708                         closedir($dh2);
 709                         foreach my $subdir (@subdirs) {
 710                                 push @refs, "$dir/$subdir"
 711                         }
 712                         next;
 713                 }
 714                 push @refs, $dir;
 715         }
 716         closedir($dh);
 717         foreach my $ref_file (@refs) {
 718                 my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
 719                 my $type = git_get_type($ref_id) || next;
 720                 my %ref_item;
 721                 my %co;
 722                 $ref_item{'type'} = $type;
 723                 $ref_item{'id'} = $ref_id;
 724                 $ref_item{'epoch'} = 0;
 725                 $ref_item{'age'} = "unknown";
 726                 if ($type eq "tag") {
 727                         my %tag = git_read_tag($ref_id);
 728                         $ref_item{'comment'} = $tag{'comment'};
 729                         if ($tag{'type'} eq "commit") {
 730                                 %co = git_read_commit($tag{'object'});
 731                                 $ref_item{'epoch'} = $co{'committer_epoch'};
 732                                 $ref_item{'age'} = $co{'age_string'};
 733                         } elsif (defined($tag{'epoch'})) {
 734                                 my $age = time - $tag{'epoch'};
 735                                 $ref_item{'epoch'} = $tag{'epoch'};
 736                                 $ref_item{'age'} = age_string($age);
 737                         }
 738                         $ref_item{'reftype'} = $tag{'type'};
 739                         $ref_item{'name'} = $tag{'name'};
 740                         $ref_item{'refid'} = $tag{'object'};
 741                 } elsif ($type eq "commit"){
 742                         %co = git_read_commit($ref_id);
 743                         $ref_item{'reftype'} = "commit";
 744                         $ref_item{'name'} = $ref_file;
 745                         $ref_item{'title'} = $co{'title'};
 746                         $ref_item{'refid'} = $ref_id;
 747                         $ref_item{'epoch'} = $co{'committer_epoch'};
 748                         $ref_item{'age'} = $co{'age_string'};
 749                 } else {
 750                         $ref_item{'reftype'} = $type;
 751                         $ref_item{'name'} = $ref_file;
 752                         $ref_item{'refid'} = $ref_id;
 753                 }
 754
 755                 push @reflist, \%ref_item;
 756         }
 757         # sort tags by age
 758         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
 759         return \@reflist;
 760 }
 761
 762 ## ----------------------------------------------------------------------
 763 ## filesystem-related functions
 764
 765 sub get_file_owner {
 766         my $path = shift;
 767
 768         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
 769         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
 770         if (!defined $gcos) {
 771                 return undef;
 772         }
 773         my $owner = $gcos;
 774         $owner =~ s/[,;].*$//;
 775         return decode("utf8", $owner, Encode::FB_DEFAULT);
 776 }
 777
 778 ## ......................................................................
 779 ## mimetype related functions
 780
 781 sub mimetype_guess_file {
 782         my $filename = shift;
 783         my $mimemap = shift;
 784         -r $mimemap or return undef;
 785
 786         my %mimemap;
 787         open(MIME, $mimemap) or return undef;
 788         while (<MIME>) {
 789                 my ($mime, $exts) = split(/\t+/);
 790                 my @exts = split(/\s+/, $exts);
 791                 foreach my $ext (@exts) {
 792                         $mimemap{$ext} = $mime;
 793                 }
 794         }
 795         close(MIME);
 796
 797         $filename =~ /\.(.*?)$/;
 798         return $mimemap{$1};
 799 }
 800
 801 sub mimetype_guess {
 802         my $filename = shift;
 803         my $mime;
 804         $filename =~ /\./ or return undef;
 805
 806         if ($mimetypes_file) {
 807                 my $file = $mimetypes_file;
 808                 #$file =~ m#^/# or $file = "$projectroot/$path/$file";
 809                 $mime = mimetype_guess_file($filename, $file);
 810         }
 811         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
 812         return $mime;
 813 }
 814
 815 sub git_blob_plain_mimetype {
 816         my $fd = shift;
 817         my $filename = shift;
 818
 819         if ($filename) {
 820                 my $mime = mimetype_guess($filename);
 821                 $mime and return $mime;
 822         }
 823
 824         # just in case
 825         return $default_blob_plain_mimetype unless $fd;
 826
 827         if (-T $fd) {
 828                 return 'text/plain' .
 829                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
 830         } elsif (! $filename) {
 831                 return 'application/octet-stream';
 832         } elsif ($filename =~ m/\.png$/i) {
 833                 return 'image/png';
 834         } elsif ($filename =~ m/\.gif$/i) {
 835                 return 'image/gif';
 836         } elsif ($filename =~ m/\.jpe?g$/i) {
 837                 return 'image/jpeg';
 838         } else {
 839                 return 'application/octet-stream';
 840         }
 841 }
 842
 843 ## ======================================================================
 844 ## functions printing HTML: header, footer, error page
 845
 846 sub git_header_html {
 847         my $status = shift || "200 OK";
 848         my $expires = shift;
 849
 850         my $title = "$site_name git";
 851         if (defined $project) {
 852                 $title .= " - $project";
 853                 if (defined $action) {
 854                         $title .= "/$action";
 855                         if (defined $file_name) {
 856                                 $title .= " - $file_name";
 857                                 if ($action eq "tree" && $file_name !~ m|/$|) {
 858                                         $title .= "/";
 859                                 }
 860                         }
 861                 }
 862         }
 863         my $content_type;
 864         # require explicit support from the UA if we are to send the page as
 865         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
 866         # we have to do this because MSIE sometimes globs '*/*', pretending to
 867         # support xhtml+xml but choking when it gets what it asked for.
 868         if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
 869                 $content_type = 'application/xhtml+xml';
 870         } else {
 871                 $content_type = 'text/html';
 872         }
 873         print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
 874         print <<EOF;
 875 <?xml version="1.0" encoding="utf-8"?>
 876 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 877 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
 878 <!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
 879 <!-- git core binaries version $git_version -->
 880 <head>
 881 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
 882 <meta name="robots" content="index, nofollow"/>
 883 <title>$title</title>
 884 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
 885 $rss_link
 886 </head>
 887 <body>
 888 EOF
 889         print "<div class=\"page_header\">\n" .
 890               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 891               "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 892               "</a>\n";
 893         print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
 894         if (defined $project) {
 895                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 896                 if (defined $action) {
 897                         print " / $action";
 898                 }
 899                 print "\n";
 900                 if (!defined $searchtext) {
 901                         $searchtext = "";
 902                 }
 903                 my $search_hash;
 904                 if (defined $hash_base) {
 905                         $search_hash = $hash_base;
 906                 } elsif (defined $hash) {
 907                         $search_hash = $hash;
 908                 } else {
 909                         $search_hash = "HEAD";
 910                 }
 911                 $cgi->param("a", "search");
 912                 $cgi->param("h", $search_hash);
 913                 print $cgi->startform(-method => "get", -action => $my_uri) .
 914                       "<div class=\"search\">\n" .
 915                       $cgi->hidden(-name => "p") . "\n" .
 916                       $cgi->hidden(-name => "a") . "\n" .
 917                       $cgi->hidden(-name => "h") . "\n" .
 918                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
 919                       "</div>" .
 920                       $cgi->end_form() . "\n";
 921         }
 922         print "</div>\n";
 923 }
 924
 925 sub git_footer_html {
 926         print "<div class=\"page_footer\">\n";
 927         if (defined $project) {
 928                 my $descr = git_read_description($project);
 929                 if (defined $descr) {
 930                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
 931                 }
 932                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
 933         } else {
 934                 print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
 935         }
 936         print "</div>\n" .
 937               "</body>\n" .
 938               "</html>";
 939 }
 940
 941 sub die_error {
 942         my $status = shift || "403 Forbidden";
 943         my $error = shift || "Malformed query, file missing or permission denied";
 944
 945         git_header_html($status);
 946         print "<div class=\"page_body\">\n" .
 947               "<br/><br/>\n" .
 948               "$status - $error\n" .
 949               "<br/>\n" .
 950               "</div>\n";
 951         git_footer_html();
 952         exit;
 953 }
 954
 955 ## ----------------------------------------------------------------------
 956 ## functions printing or outputting HTML: navigation
 957
 958 sub git_page_nav {
 959         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
 960         $extra = '' if !defined $extra; # pager or formats
 961
 962         my @navs = qw(summary shortlog log commit commitdiff tree);
 963         if ($suppress) {
 964                 @navs = grep { $_ ne $suppress } @navs;
 965         }
 966
 967         my %arg = map { $_, ''} @navs;
 968         if (defined $head) {
 969                 for (qw(commit commitdiff)) {
 970                         $arg{$_} = ";h=$head";
 971                 }
 972                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
 973                         for (qw(shortlog log)) {
 974                                 $arg{$_} = ";h=$head";
 975                         }
 976                 }
 977         }
 978         $arg{tree} .= ";h=$treehead" if defined $treehead;
 979         $arg{tree} .= ";hb=$treebase" if defined $treebase;
 980
 981         print "<div class=\"page_nav\">\n" .
 982                 (join " | ",
 983                  map { $_ eq $current
 984                                          ? $_
 985                                          : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
 986                                  }
 987                  @navs);
 988         print "<br/>\n$extra<br/>\n" .
 989               "</div>\n";
 990 }
 991
 992 sub git_get_paging_nav {
 993         my ($action, $hash, $head, $page, $nrevs) = @_;
 994         my $paging_nav;
 995
 996
 997         if ($hash ne $head || $page) {
 998                 $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
 999         } else {
1000                 $paging_nav .= "HEAD";
1001         }
1002
1003         if ($page > 0) {
1004                 $paging_nav .= " &sdot; " .
1005                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
1006                                                          -accesskey => "p", -title => "Alt-p"}, "prev");
1007         } else {
1008                 $paging_nav .= " &sdot; prev";
1009         }
1010
1011         if ($nrevs >= (100 * ($page+1)-1)) {
1012                 $paging_nav .= " &sdot; " .
1013                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
1014                                                          -accesskey => "n", -title => "Alt-n"}, "next");
1015         } else {
1016                 $paging_nav .= " &sdot; next";
1017         }
1018
1019         return $paging_nav;
1020 }
1021
1022 ## ......................................................................
1023 ## functions printing or outputting HTML: div
1024
1025 sub git_header_div {
1026         my ($action, $title, $hash, $hash_base) = @_;
1027         my $rest = '';
1028
1029         $rest .= ";h=$hash" if $hash;
1030         $rest .= ";hb=$hash_base" if $hash_base;
1031
1032         print "<div class=\"header\">\n" .
1033               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
1034                        -class => "title"}, $title ? $title : $action) . "\n" .
1035               "</div>\n";
1036 }
1037
1038 sub git_print_page_path {
1039         my $name = shift;
1040         my $type = shift;
1041
1042         if (!defined $name) {
1043                 print "<div class=\"page_path\"><b>/</b></div>\n";
1044         } elsif ($type =~ "blob") {
1045                 print "<div class=\"page_path\"><b>" .
1046                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
1047         } else {
1048                 print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
1049         }
1050 }
1051
1052 ## ......................................................................
1053 ## functions printing large fragments of HTML
1054
1055 sub git_shortlog_body {
1056         # uses global variable $project
1057         my ($revlist, $from, $to, $refs, $extra) = @_;
1058         $from = 0 unless defined $from;
1059         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1060
1061         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1062         my $alternate = 0;
1063         for (my $i = $from; $i <= $to; $i++) {
1064                 my $commit = $revlist->[$i];
1065                 #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
1066                 my $ref = git_get_referencing($refs, $commit);
1067                 my %co = git_read_commit($commit);
1068                 my %ad = date_str($co{'author_epoch'});
1069                 if ($alternate) {
1070                         print "<tr class=\"dark\">\n";
1071                 } else {
1072                         print "<tr class=\"light\">\n";
1073                 }
1074                 $alternate ^= 1;
1075                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1076                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1077                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1078                       "<td>";
1079                 if (length($co{'title_short'}) < length($co{'title'})) {
1080                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1081                                        -class => "list", -title => "$co{'title'}"},
1082                               "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
1083                 } else {
1084                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
1085                                        -class => "list"},
1086                               "<b>" . esc_html($co{'title'}) . "$ref</b>");
1087                 }
1088                 print "</td>\n" .
1089                       "<td class=\"link\">" .
1090                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
1091                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1092                       "</td>\n" .
1093                       "</tr>\n";
1094         }
1095         if (defined $extra) {
1096                 print "<tr>\n" .
1097                       "<td colspan=\"4\">$extra</td>\n" .
1098                       "</tr>\n";
1099         }
1100         print "</table>\n";
1101 }
1102
1103 sub git_tags_body {
1104         # uses global variable $project
1105         my ($taglist, $from, $to, $extra) = @_;
1106         $from = 0 unless defined $from;
1107         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1108
1109         print "<table class=\"tags\" cellspacing=\"0\">\n";
1110         my $alternate = 0;
1111         for (my $i = $from; $i <= $to; $i++) {
1112                 my $entry = $taglist->[$i];
1113                 my %tag = %$entry;
1114                 my $comment_lines = $tag{'comment'};
1115                 my $comment = shift @$comment_lines;
1116                 my $comment_short;
1117                 if (defined $comment) {
1118                         $comment_short = chop_str($comment, 30, 5);
1119                 }
1120                 if ($alternate) {
1121                         print "<tr class=\"dark\">\n";
1122                 } else {
1123                         print "<tr class=\"light\">\n";
1124                 }
1125                 $alternate ^= 1;
1126                 print "<td><i>$tag{'age'}</i></td>\n" .
1127                       "<td>" .
1128                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
1129                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1130                       "</td>\n" .
1131                       "<td>";
1132                 if (defined $comment) {
1133                         if (length($comment_short) < length($comment)) {
1134                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1135                                                -class => "list", -title => $comment}, $comment_short);
1136                         } else {
1137                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
1138                                                -class => "list"}, $comment);
1139                         }
1140                 }
1141                 print "</td>\n" .
1142                       "<td class=\"selflink\">";
1143                 if ($tag{'type'} eq "tag") {
1144                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
1145                 } else {
1146                         print "&nbsp;";
1147                 }
1148                 print "</td>\n" .
1149                       "<td class=\"link\">" . " | " .
1150                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
1151                 if ($tag{'reftype'} eq "commit") {
1152                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
1153                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
1154                 } elsif ($tag{'reftype'} eq "blob") {
1155                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
1156                 }
1157                 print "</td>\n" .
1158                       "</tr>";
1159         }
1160         if (defined $extra) {
1161                 print "<tr>\n" .
1162                       "<td colspan=\"5\">$extra</td>\n" .
1163                       "</tr>\n";
1164         }
1165         print "</table>\n";
1166 }
1167
1168 sub git_heads_body {
1169         # uses global variable $project
1170         my ($taglist, $head, $from, $to, $extra) = @_;
1171         $from = 0 unless defined $from;
1172         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1173
1174         print "<table class=\"heads\" cellspacing=\"0\">\n";
1175         my $alternate = 0;
1176         for (my $i = $from; $i <= $to; $i++) {
1177                 my $entry = $taglist->[$i];
1178                 my %tag = %$entry;
1179                 my $curr = $tag{'id'} eq $head;
1180                 if ($alternate) {
1181                         print "<tr class=\"dark\">\n";
1182                 } else {
1183                         print "<tr class=\"light\">\n";
1184                 }
1185                 $alternate ^= 1;
1186                 print "<td><i>$tag{'age'}</i></td>\n" .
1187                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1188                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
1189                                -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
1190                       "</td>\n" .
1191                       "<td class=\"link\">" .
1192                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
1193                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
1194                       "</td>\n" .
1195                       "</tr>";
1196         }
1197         if (defined $extra) {
1198                 print "<tr>\n" .
1199                       "<td colspan=\"3\">$extra</td>\n" .
1200                       "</tr>\n";
1201         }
1202         print "</table>\n";
1203 }
1204
1205 ## ----------------------------------------------------------------------
1206 ## functions printing large fragments, format as one of arguments
1207
1208 sub git_diff_print {
1209         my $from = shift;
1210         my $from_name = shift;
1211         my $to = shift;
1212         my $to_name = shift;
1213         my $format = shift || "html";
1214
1215         my $from_tmp = "/dev/null";
1216         my $to_tmp = "/dev/null";
1217         my $pid = $$;
1218
1219         # create tmp from-file
1220         if (defined $from) {
1221                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1222                 open my $fd2, "> $from_tmp";
1223                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1224                 my @file = <$fd>;
1225                 print $fd2 @file;
1226                 close $fd2;
1227                 close $fd;
1228         }
1229
1230         # create tmp to-file
1231         if (defined $to) {
1232                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1233                 open my $fd2, "> $to_tmp";
1234                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1235                 my @file = <$fd>;
1236                 print $fd2 @file;
1237                 close $fd2;
1238                 close $fd;
1239         }
1240
1241         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1242         if ($format eq "plain") {
1243                 undef $/;
1244                 print <$fd>;
1245                 $/ = "\n";
1246         } else {
1247                 while (my $line = <$fd>) {
1248                         chomp $line;
1249                         my $char = substr($line, 0, 1);
1250                         my $diff_class = "";
1251                         if ($char eq '+') {
1252                                 $diff_class = " add";
1253                         } elsif ($char eq "-") {
1254                                 $diff_class = " rem";
1255                         } elsif ($char eq "@") {
1256                                 $diff_class = " chunk_header";
1257                         } elsif ($char eq "\\") {
1258                                 # skip errors
1259                                 next;
1260                         }
1261                         while ((my $pos = index($line, "\t")) != -1) {
1262                                 if (my $count = (8 - (($pos-1) % 8))) {
1263                                         my $spaces = ' ' x $count;
1264                                         $line =~ s/\t/$spaces/;
1265                                 }
1266                         }
1267                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1268                 }
1269         }
1270         close $fd;
1271
1272         if (defined $from) {
1273                 unlink($from_tmp);
1274         }
1275         if (defined $to) {
1276                 unlink($to_tmp);
1277         }
1278 }
1279
1280
1281 ## ======================================================================
1282 ## ======================================================================
1283 ## actions
1284
1285 # git-logo (cached in browser for one day)
1286 sub git_logo {
1287         binmode STDOUT, ':raw';
1288         print $cgi->header(-type => 'image/png', -expires => '+1d');
1289         # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
1290         print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
1291                 "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
1292                 "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
1293                 "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
1294                 "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
1295                 "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
1296                 "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
1297                 "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
1298                 "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
1299                 "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
1300                 "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
1301                 "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
1302                 "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
1303 }
1304
1305 sub git_project_list {
1306         my @list = git_read_projects();
1307         my @projects;
1308         if (!@list) {
1309                 die_error(undef, "No project found.");
1310         }
1311         foreach my $pr (@list) {
1312                 my $head = git_read_head($pr->{'path'});
1313                 if (!defined $head) {
1314                         next;
1315                 }
1316                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1317                 my %co = git_read_commit($head);
1318                 if (!%co) {
1319                         next;
1320                 }
1321                 $pr->{'commit'} = \%co;
1322                 if (!defined $pr->{'descr'}) {
1323                         my $descr = git_read_description($pr->{'path'}) || "";
1324                         $pr->{'descr'} = chop_str($descr, 25, 5);
1325                 }
1326                 if (!defined $pr->{'owner'}) {
1327                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
1328                 }
1329                 push @projects, $pr;
1330         }
1331         git_header_html();
1332         if (-f $home_text) {
1333                 print "<div class=\"index_include\">\n";
1334                 open (my $fd, $home_text);
1335                 print <$fd>;
1336                 close $fd;
1337                 print "</div>\n";
1338         }
1339         print "<table class=\"project_list\">\n" .
1340               "<tr>\n";
1341         if (!defined($order) || (defined($order) && ($order eq "project"))) {
1342                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
1343                 print "<th>Project</th>\n";
1344         } else {
1345                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=project")}, "Project") . "</th>\n";
1346         }
1347         if (defined($order) && ($order eq "descr")) {
1348                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
1349                 print "<th>Description</th>\n";
1350         } else {
1351                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=descr")}, "Description") . "</th>\n";
1352         }
1353         if (defined($order) && ($order eq "owner")) {
1354                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
1355                 print "<th>Owner</th>\n";
1356         } else {
1357                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=owner")}, "Owner") . "</th>\n";
1358         }
1359         if (defined($order) && ($order eq "age")) {
1360                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
1361                 print "<th>Last Change</th>\n";
1362         } else {
1363                 print "<th>" . $cgi->a({-class => "header", -href => "$my_uri?" . esc_param("o=age")}, "Last Change") . "</th>\n";
1364         }
1365         print "<th></th>\n" .
1366               "</tr>\n";
1367         my $alternate = 0;
1368         foreach my $pr (@projects) {
1369                 if ($alternate) {
1370                         print "<tr class=\"dark\">\n";
1371                 } else {
1372                         print "<tr class=\"light\">\n";
1373                 }
1374                 $alternate ^= 1;
1375                 print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
1376                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
1377                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
1378                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" . $pr->{'commit'}{'age_string'} . "</td>\n" .
1379                       "<td class=\"link\">" .
1380                       $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary")}, "summary") .
1381                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=shortlog")}, "shortlog") .
1382                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=log")}, "log") .
1383                       "</td>\n" .
1384                       "</tr>\n";
1385         }
1386         print "</table>\n";
1387         git_footer_html();
1388 }
1389
1390 sub git_summary {
1391         my $descr = git_read_description($project) || "none";
1392         my $head = git_read_head($project);
1393         my %co = git_read_commit($head);
1394         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1395
1396         my $owner;
1397         if (-f $projects_list) {
1398                 open (my $fd , $projects_list);
1399                 while (my $line = <$fd>) {
1400                         chomp $line;
1401                         my ($pr, $ow) = split ' ', $line;
1402                         $pr = unescape($pr);
1403                         $ow = unescape($ow);
1404                         if ($pr eq $project) {
1405                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
1406                                 last;
1407                         }
1408                 }
1409                 close $fd;
1410         }
1411         if (!defined $owner) {
1412                 $owner = get_file_owner("$projectroot/$project");
1413         }
1414
1415         my $refs = read_info_ref();
1416         git_header_html();
1417         git_page_nav('summary','', $head);
1418
1419         print "<div class=\"title\">&nbsp;</div>\n";
1420         print "<table cellspacing=\"0\">\n" .
1421               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
1422               "<tr><td>owner</td><td>$owner</td></tr>\n" .
1423               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
1424               "</table>\n";
1425
1426         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
1427                 or die_error(undef, "Open git-rev-list failed.");
1428         my @revlist = map { chomp; $_ } <$fd>;
1429         close $fd;
1430         git_header_div('shortlog');
1431         git_shortlog_body(\@revlist, 0, 15, $refs,
1432                           $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
1433
1434         my $taglist = git_read_refs("refs/tags");
1435         if (defined @$taglist) {
1436                 git_header_div('tags');
1437                 git_tags_body($taglist, 0, 15,
1438                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
1439         }
1440
1441         my $headlist = git_read_refs("refs/heads");
1442         if (defined @$headlist) {
1443                 git_header_div('heads');
1444                 git_heads_body($taglist, $head, 0, 15,
1445                                $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
1446         }
1447
1448         git_footer_html();
1449 }
1450
1451 sub git_tag {
1452         my $head = git_read_head($project);
1453         git_header_html();
1454         git_page_nav('','', $head,undef,$head);
1455         my %tag = git_read_tag($hash);
1456         git_header_div('commit', esc_html($tag{'name'}), $hash);
1457         print "<div class=\"title_text\">\n" .
1458               "<table cellspacing=\"0\">\n" .
1459               "<tr>\n" .
1460               "<td>object</td>\n" .
1461               "<td>" . $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'object'}) . "</td>\n" .
1462               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'type'};h=$tag{'object'}")}, $tag{'type'}) . "</td>\n" .
1463               "</tr>\n";
1464         if (defined($tag{'author'})) {
1465                 my %ad = date_str($tag{'epoch'}, $tag{'tz'});
1466                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
1467                 print "<tr><td></td><td>" . $ad{'rfc2822'} . sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) . "</td></tr>\n";
1468         }
1469         print "</table>\n\n" .
1470               "</div>\n";
1471         print "<div class=\"page_body\">";
1472         my $comment = $tag{'comment'};
1473         foreach my $line (@$comment) {
1474                 print esc_html($line) . "<br/>\n";
1475         }
1476         print "</div>\n";
1477         git_footer_html();
1478 }
1479
1480 sub git_blame2 {
1481         my $fd;
1482         my $ftype;
1483         die_error(undef, "Permission denied.") if (!git_get_project_config_bool ('blame'));
1484         die_error('404 Not Found', "File name not defined") if (!$file_name);
1485         $hash_base ||= git_read_head($project);
1486         die_error(undef, "Reading commit failed") unless ($hash_base);
1487         my %co = git_read_commit($hash_base)
1488                 or die_error(undef, "Reading commit failed");
1489         if (!defined $hash) {
1490                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1491                         or die_error(undef, "Error looking up file");
1492         }
1493         $ftype = git_get_type($hash);
1494         if ($ftype !~ "blob") {
1495                 die_error("400 Bad Request", "object is not a blob");
1496         }
1497         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
1498                 or die_error(undef, "Open git-blame failed.");
1499         git_header_html();
1500         my $formats_nav =
1501                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1502                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1503         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1504         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1505         git_print_page_path($file_name, $ftype);
1506         my @rev_color = (qw(light dark));
1507         my $num_colors = scalar(@rev_color);
1508         my $current_color = 0;
1509         my $last_rev;
1510         print "<div class=\"page_body\">\n";
1511         print "<table class=\"blame\">\n";
1512         print "<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n";
1513         while (<$fd>) {
1514                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
1515                 my $full_rev = $1;
1516                 my $rev = substr($full_rev, 0, 8);
1517                 my $lineno = $2;
1518                 my $data = $3;
1519
1520                 if (!defined $last_rev) {
1521                         $last_rev = $full_rev;
1522                 } elsif ($last_rev ne $full_rev) {
1523                         $last_rev = $full_rev;
1524                         $current_color = ++$current_color % $num_colors;
1525                 }
1526                 print "<tr class=\"$rev_color[$current_color]\">\n";
1527                 print "<td class=\"sha1\">" .
1528                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$full_rev;f=$file_name")}, esc_html($rev)) . "</td>\n";
1529                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" . esc_html($lineno) . "</a></td>\n";
1530                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
1531                 print "</tr>\n";
1532         }
1533         print "</table>\n";
1534         print "</div>";
1535         close $fd or print "Reading blob failed\n";
1536         git_footer_html();
1537 }
1538
1539 sub git_blame {
1540         my $fd;
1541         die_error('403 Permission denied', "Permission denied.") if (!git_get_project_config_bool ('blame'));
1542         die_error('404 Not Found', "What file will it be, master?") if (!$file_name);
1543         $hash_base ||= git_read_head($project);
1544         die_error(undef, "Reading commit failed.") unless ($hash_base);
1545         my %co = git_read_commit($hash_base)
1546                 or die_error(undef, "Reading commit failed.");
1547         if (!defined $hash) {
1548                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
1549                         or die_error(undef, "Error lookup file.");
1550         }
1551         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
1552                 or die_error(undef, "Open git-annotate failed.");
1553         git_header_html();
1554         my $formats_nav =
1555                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
1556                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
1557         git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1558         git_header_div('commit', esc_html($co{'title'}), $hash_base);
1559         git_print_page_path($file_name);
1560         print "<div class=\"page_body\">\n";
1561         print <<HTML;
1562 <table class="blame">
1563   <tr>
1564     <th>Commit</th>
1565     <th>Age</th>
1566     <th>Author</th>
1567     <th>Line</th>
1568     <th>Data</th>
1569   </tr>
1570 HTML
1571         my @line_class = (qw(light dark));
1572         my $line_class_len = scalar (@line_class);
1573         my $line_class_num = $#line_class;
1574         while (my $line = <$fd>) {
1575                 my $long_rev;
1576                 my $short_rev;
1577                 my $author;
1578                 my $time;
1579                 my $lineno;
1580                 my $data;
1581                 my $age;
1582                 my $age_str;
1583                 my $age_class;
1584
1585                 chomp $line;
1586                 $line_class_num = ($line_class_num + 1) % $line_class_len;
1587
1588                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
1589                         $long_rev = $1;
1590                         $author   = $2;
1591                         $time     = $3;
1592                         $lineno   = $4;
1593                         $data     = $5;
1594                 } else {
1595                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
1596                         next;
1597                 }
1598                 $short_rev  = substr ($long_rev, 0, 8);
1599                 $age        = time () - $time;
1600                 $age_str    = age_string ($age);
1601                 $age_str    =~ s/ /&nbsp;/g;
1602                 $age_class  = age_class($age);
1603                 $author     = esc_html ($author);
1604                 $author     =~ s/ /&nbsp;/g;
1605                 # escape tabs
1606                 while ((my $pos = index($data, "\t")) != -1) {
1607                         if (my $count = (8 - ($pos % 8))) {
1608                                 my $spaces = ' ' x $count;
1609                                 $data =~ s/\t/$spaces/;
1610                         }
1611                 }
1612                 $data = esc_html ($data);
1613
1614                 print <<HTML;
1615   <tr class="$line_class[$line_class_num]">
1616     <td class="sha1"><a href="$my_uri?${\esc_param ("p=$project;a=commit;h=$long_rev")}" class="text">$short_rev..</a></td>
1617     <td class="$age_class">$age_str</td>
1618     <td>$author</td>
1619     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
1620     <td class="pre">$data</td>
1621   </tr>
1622 HTML
1623         } # while (my $line = <$fd>)
1624         print "</table>\n\n";
1625         close $fd or print "Reading blob failed.\n";
1626         print "</div>";
1627         git_footer_html();
1628 }
1629
1630 sub git_tags {
1631         my $head = git_read_head($project);
1632         git_header_html();
1633         git_page_nav('','', $head,undef,$head);
1634         git_header_div('summary', $project);
1635
1636         my $taglist = git_read_refs("refs/tags");
1637         if (defined @$taglist) {
1638                 git_tags_body($taglist);
1639         }
1640         git_footer_html();
1641 }
1642
1643 sub git_heads {
1644         my $head = git_read_head($project);
1645         git_header_html();
1646         git_page_nav('','', $head,undef,$head);
1647         git_header_div('summary', $project);
1648
1649         my $taglist = git_read_refs("refs/heads");
1650         my $alternate = 0;
1651         if (defined @$taglist) {
1652                 git_heads_body($taglist, $head);
1653         }
1654         git_footer_html();
1655 }
1656
1657 sub git_blob_plain {
1658         if (!defined $hash) {
1659                 if (defined $file_name) {
1660                         my $base = $hash_base || git_read_head($project);
1661                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1662                                 or die_error(undef, "Error lookup file.");
1663                 } else {
1664                         die_error(undef, "No file name defined.");
1665                 }
1666         }
1667         my $type = shift;
1668         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1669                 or die_error("Couldn't cat $file_name, $hash");
1670
1671         $type ||= git_blob_plain_mimetype($fd, $file_name);
1672
1673         # save as filename, even when no $file_name is given
1674         my $save_as = "$hash";
1675         if (defined $file_name) {
1676                 $save_as = $file_name;
1677         } elsif ($type =~ m/^text\//) {
1678                 $save_as .= '.txt';
1679         }
1680
1681         print $cgi->header(-type => "$type", '-content-disposition' => "inline; filename=\"$save_as\"");
1682         undef $/;
1683         binmode STDOUT, ':raw';
1684         print <$fd>;
1685         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
1686         $/ = "\n";
1687         close $fd;
1688 }
1689
1690 sub git_blob {
1691         if (!defined $hash) {
1692                 if (defined $file_name) {
1693                         my $base = $hash_base || git_read_head($project);
1694                         $hash = git_get_hash_by_path($base, $file_name, "blob")
1695                                 or die_error(undef, "Error lookup file.");
1696                 } else {
1697                         die_error(undef, "No file name defined.");
1698                 }
1699         }
1700         my $have_blame = git_get_project_config_bool ('blame');
1701         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
1702                 or die_error(undef, "Couldn't cat $file_name, $hash.");
1703         my $mimetype = git_blob_plain_mimetype($fd, $file_name);
1704         if ($mimetype !~ m/^text\//) {
1705                 close $fd;
1706                 return git_blob_plain($mimetype);
1707         }
1708         git_header_html();
1709         my $formats_nav = '';
1710         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1711                 if (defined $file_name) {
1712                         if ($have_blame) {
1713                                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
1714                         }
1715                         $formats_nav .=
1716                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
1717                                 " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
1718                 } else {
1719                         $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
1720                 }
1721                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
1722                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
1723         } else {
1724                 print "<div class=\"page_nav\">\n" .
1725                       "<br/><br/></div>\n" .
1726                       "<div class=\"title\">$hash</div>\n";
1727         }
1728         git_print_page_path($file_name, "blob");
1729         print "<div class=\"page_body\">\n";
1730         my $nr;
1731         while (my $line = <$fd>) {
1732                 chomp $line;
1733                 $nr++;
1734                 while ((my $pos = index($line, "\t")) != -1) {
1735                         if (my $count = (8 - ($pos % 8))) {
1736                                 my $spaces = ' ' x $count;
1737                                 $line =~ s/\t/$spaces/;
1738                         }
1739                 }
1740                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n", $nr, $nr, $nr, esc_html($line);
1741         }
1742         close $fd or print "Reading blob failed.\n";
1743         print "</div>";
1744         git_footer_html();
1745 }
1746
1747 sub git_tree {
1748         if (!defined $hash) {
1749                 $hash = git_read_head($project);
1750                 if (defined $file_name) {
1751                         my $base = $hash_base || $hash;
1752                         $hash = git_get_hash_by_path($base, $file_name, "tree");
1753                 }
1754                 if (!defined $hash_base) {
1755                         $hash_base = $hash;
1756                 }
1757         }
1758         $/ = "\0";
1759         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
1760                 or die_error(undef, "Open git-ls-tree failed.");
1761         my @entries = map { chomp; $_ } <$fd>;
1762         close $fd or die_error(undef, "Reading tree failed.");
1763         $/ = "\n";
1764
1765         my $refs = read_info_ref();
1766         my $ref = git_get_referencing($refs, $hash_base);
1767         git_header_html();
1768         my $base_key = "";
1769         my $base = "";
1770         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
1771                 $base_key = ";hb=$hash_base";
1772                 git_page_nav('tree','', $hash_base);
1773                 git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
1774         } else {
1775                 print "<div class=\"page_nav\">\n";
1776                 print "<br/><br/></div>\n";
1777                 print "<div class=\"title\">$hash</div>\n";
1778         }
1779         if (defined $file_name) {
1780                 $base = esc_html("$file_name/");
1781         }
1782         git_print_page_path($file_name);
1783         print "<div class=\"page_body\">\n";
1784         print "<table cellspacing=\"0\">\n";
1785         my $alternate = 0;
1786         foreach my $line (@entries) {
1787                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
1788                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1789                 my $t_mode = $1;
1790                 my $t_type = $2;
1791                 my $t_hash = $3;
1792                 my $t_name = validate_input($4);
1793                 if ($alternate) {
1794                         print "<tr class=\"dark\">\n";
1795                 } else {
1796                         print "<tr class=\"light\">\n";
1797                 }
1798                 $alternate ^= 1;
1799                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
1800                 if ($t_type eq "blob") {
1801                         print "<td class=\"list\">" .
1802                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
1803                               "</td>\n" .
1804                               "<td class=\"link\">" .
1805                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
1806 #                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
1807                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
1808                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
1809                               "</td>\n";
1810                 } elsif ($t_type eq "tree") {
1811                         print "<td class=\"list\">" .
1812                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
1813                               "</td>\n" .
1814                               "<td class=\"link\">" .
1815                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
1816                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
1817                               "</td>\n";
1818                 }
1819                 print "</tr>\n";
1820         }
1821         print "</table>\n" .
1822               "</div>";
1823         git_footer_html();
1824 }
1825
1826 sub git_log {
1827         my $head = git_read_head($project);
1828         if (!defined $hash) {
1829                 $hash = $head;
1830         }
1831         if (!defined $page) {
1832                 $page = 0;
1833         }
1834         my $refs = read_info_ref();
1835
1836         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
1837         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
1838                 or die_error(undef, "Open git-rev-list failed.");
1839         my @revlist = map { chomp; $_ } <$fd>;
1840         close $fd;
1841
1842         my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
1843
1844         git_header_html();
1845         git_page_nav('log','', $hash,undef,undef, $paging_nav);
1846
1847         if (!@revlist) {
1848                 my %co = git_read_commit($hash);
1849
1850                 git_header_div('summary', $project);
1851                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
1852         }
1853         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
1854                 my $commit = $revlist[$i];
1855                 my $ref = git_get_referencing($refs, $commit);
1856                 my %co = git_read_commit($commit);
1857                 next if !%co;
1858                 my %ad = date_str($co{'author_epoch'});
1859                 git_header_div('commit',
1860                                                                          "<span class=\"age\">$co{'age_string'}</span>" .
1861                                                                          esc_html($co{'title'}) . $ref,
1862                                                                          $commit);
1863                 print "<div class=\"title_text\">\n" .
1864                       "<div class=\"log_link\">\n" .
1865                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
1866                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
1867                       "<br/>\n" .
1868                       "</div>\n" .
1869                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
1870                       "</div>\n" .
1871                       "<div class=\"log_body\">\n";
1872                 my $comment = $co{'comment'};
1873                 my $empty = 0;
1874                 foreach my $line (@$comment) {
1875                         if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1876                                 next;
1877                         }
1878                         if ($line eq "") {
1879                                 if ($empty) {
1880                                         next;
1881                                 }
1882                                 $empty = 1;
1883                         } else {
1884                                 $empty = 0;
1885                         }
1886                         print format_log_line_html($line) . "<br/>\n";
1887                 }
1888                 if (!$empty) {
1889                         print "<br/>\n";
1890                 }
1891                 print "</div>\n";
1892         }
1893         git_footer_html();
1894 }
1895
1896 sub git_commit {
1897         my %co = git_read_commit($hash);
1898         if (!%co) {
1899                 die_error(undef, "Unknown commit object.");
1900         }
1901         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
1902         my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
1903
1904         my $parent = $co{'parent'};
1905         if (!defined $parent) {
1906                 $parent = "--root";
1907         }
1908         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
1909                 or die_error(undef, "Open git-diff-tree failed.");
1910         my @difftree = map { chomp; $_ } <$fd>;
1911         close $fd or die_error(undef, "Reading git-diff-tree failed.");
1912
1913         # non-textual hash id's can be cached
1914         my $expires;
1915         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
1916                 $expires = "+1d";
1917         }
1918         my $refs = read_info_ref();
1919         my $ref = git_get_referencing($refs, $co{'id'});
1920         my $formats_nav = '';
1921         if (defined $file_name && defined $co{'parent'}) {
1922                 my $parent = $co{'parent'};
1923                 $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
1924         }
1925         git_header_html(undef, $expires);
1926         git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
1927                                                          $hash, $co{'tree'}, $hash,
1928                                                          $formats_nav);
1929
1930         if (defined $co{'parent'}) {
1931                 git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
1932         } else {
1933                 git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
1934         }
1935         print "<div class=\"title_text\">\n" .
1936               "<table cellspacing=\"0\">\n";
1937         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
1938               "<tr>" .
1939               "<td></td><td> $ad{'rfc2822'}";
1940         if ($ad{'hour_local'} < 6) {
1941                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1942         } else {
1943                 printf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1944         }
1945         print "</td>" .
1946               "</tr>\n";
1947         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
1948         print "<tr><td></td><td> $cd{'rfc2822'}" . sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) . "</td></tr>\n";
1949         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
1950         print "<tr>" .
1951               "<td>tree</td>" .
1952               "<td class=\"sha1\">" .
1953               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), class => "list"}, $co{'tree'}) .
1954               "</td>" .
1955               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
1956               "</td>" .
1957               "</tr>\n";
1958         my $parents = $co{'parents'};
1959         foreach my $par (@$parents) {
1960                 print "<tr>" .
1961                       "<td>parent</td>" .
1962                       "<td class=\"sha1\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par"), class => "list"}, $par) . "</td>" .
1963                       "<td class=\"link\">" .
1964                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$par")}, "commit") .
1965                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash;hp=$par")}, "commitdiff") .
1966                       "</td>" .
1967                       "</tr>\n";
1968         }
1969         print "</table>".
1970               "</div>\n";
1971         print "<div class=\"page_body\">\n";
1972         my $comment = $co{'comment'};
1973         my $empty = 0;
1974         my $signed = 0;
1975         foreach my $line (@$comment) {
1976                 # print only one empty line
1977                 if ($line eq "") {
1978                         if ($empty || $signed) {
1979                                 next;
1980                         }
1981                         $empty = 1;
1982                 } else {
1983                         $empty = 0;
1984                 }
1985                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1986                         $signed = 1;
1987                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1988                 } else {
1989                         $signed = 0;
1990                         print format_log_line_html($line) . "<br/>\n";
1991                 }
1992         }
1993         print "</div>\n";
1994         print "<div class=\"list_head\">\n";
1995         if ($#difftree > 10) {
1996                 print(($#difftree + 1) . " files changed:\n");
1997         }
1998         print "</div>\n";
1999         print "<table class=\"diff_tree\">\n";
2000         my $alternate = 0;
2001         foreach my $line (@difftree) {
2002                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2003                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2004                 if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2005                         next;
2006                 }
2007                 my $from_mode = $1;
2008                 my $to_mode = $2;
2009                 my $from_id = $3;
2010                 my $to_id = $4;
2011                 my $status = $5;
2012                 my $similarity = $6;
2013                 my $file = validate_input(unquote($7));
2014                 if ($alternate) {
2015                         print "<tr class=\"dark\">\n";
2016                 } else {
2017                         print "<tr class=\"light\">\n";
2018                 }
2019                 $alternate ^= 1;
2020                 if ($status eq "A") {
2021                         my $mode_chng = "";
2022                         if (S_ISREG(oct $to_mode)) {
2023                                 $mode_chng = sprintf(" with mode: %04o", (oct $to_mode) & 0777);
2024                         }
2025                         print "<td>" .
2026                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2027                               "<td><span class=\"file_status new\">[new " . file_type($to_mode) . "$mode_chng]</span></td>\n" .
2028                               "<td class=\"link\">" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob") . "</td>\n";
2029                 } elsif ($status eq "D") {
2030                         print "<td>" .
2031                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file)) . "</td>\n" .
2032                               "<td><span class=\"file_status deleted\">[deleted " . file_type($from_mode). "]</span></td>\n" .
2033                               "<td class=\"link\">" .
2034                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, "blob") .
2035                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") .
2036                               "</td>\n"
2037                 } elsif ($status eq "M" || $status eq "T") {
2038                         my $mode_chnge = "";
2039                         if ($from_mode != $to_mode) {
2040                                 $mode_chnge = " <span class=\"file_status mode_chnge\">[changed";
2041                                 if (((oct $from_mode) & S_IFMT) != ((oct $to_mode) & S_IFMT)) {
2042                                         $mode_chnge .= " from " . file_type($from_mode) . " to " . file_type($to_mode);
2043                                 }
2044                                 if (((oct $from_mode) & 0777) != ((oct $to_mode) & 0777)) {
2045                                         if (S_ISREG($from_mode) && S_ISREG($to_mode)) {
2046                                                 $mode_chnge .= sprintf(" mode: %04o->%04o", (oct $from_mode) & 0777, (oct $to_mode) & 0777);
2047                                         } elsif (S_ISREG($to_mode)) {
2048                                                 $mode_chnge .= sprintf(" mode: %04o", (oct $to_mode) & 0777);
2049                                         }
2050                                 }
2051                                 $mode_chnge .= "]</span>\n";
2052                         }
2053                         print "<td>";
2054                         if ($to_id ne $from_id) {
2055                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2056                         } else {
2057                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file"), -class => "list"}, esc_html($file));
2058                         }
2059                         print "</td>\n" .
2060                               "<td>$mode_chnge</td>\n" .
2061                               "<td class=\"link\">";
2062                         print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, "blob");
2063                         if ($to_id ne $from_id) {
2064                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$file")}, "diff");
2065                         }
2066                         print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash;f=$file")}, "history") . "\n";
2067                         print "</td>\n";
2068                 } elsif ($status eq "R") {
2069                         my ($from_file, $to_file) = split "\t", $file;
2070                         my $mode_chng = "";
2071                         if ($from_mode != $to_mode) {
2072                                 $mode_chng = sprintf(", mode: %04o", (oct $to_mode) & 0777);
2073                         }
2074                         print "<td>" .
2075                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file"), -class => "list"}, esc_html($to_file)) . "</td>\n" .
2076                               "<td><span class=\"file_status moved\">[moved from " .
2077                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$from_file"), -class => "list"}, esc_html($from_file)) .
2078                               " with " . (int $similarity) . "% similarity$mode_chng]</span></td>\n" .
2079                               "<td class=\"link\">" .
2080                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$to_file")}, "blob");
2081                         if ($to_id ne $from_id) {
2082                                 print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$to_id;hp=$from_id;hb=$hash;f=$to_file")}, "diff");
2083                         }
2084                         print "</td>\n";
2085                 }
2086                 print "</tr>\n";
2087         }
2088         print "</table>\n";
2089         git_footer_html();
2090 }
2091
2092 sub git_blobdiff {
2093         mkdir($git_temp, 0700);
2094         git_header_html();
2095         if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
2096                 my $formats_nav =
2097                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2098                 git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2099                 git_header_div('commit', esc_html($co{'title'}), $hash_base);
2100         } else {
2101                 print "<div class=\"page_nav\">\n" .
2102                       "<br/><br/></div>\n" .
2103                       "<div class=\"title\">$hash vs $hash_parent</div>\n";
2104         }
2105         git_print_page_path($file_name, "blob");
2106         print "<div class=\"page_body\">\n" .
2107               "<div class=\"diff_info\">blob:" .
2108               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash_parent;hb=$hash_base;f=$file_name")}, $hash_parent) .
2109               " -> blob:" .
2110               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, $hash) .
2111               "</div>\n";
2112         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2113         print "</div>";
2114         git_footer_html();
2115 }
2116
2117 sub git_blobdiff_plain {
2118         mkdir($git_temp, 0700);
2119         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2120         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2121 }
2122
2123 sub git_commitdiff {
2124         mkdir($git_temp, 0700);
2125         my %co = git_read_commit($hash);
2126         if (!%co) {
2127                 die_error(undef, "Unknown commit object.");
2128         }
2129         if (!defined $hash_parent) {
2130                 $hash_parent = $co{'parent'};
2131         }
2132         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2133                 or die_error(undef, "Open git-diff-tree failed.");
2134         my @difftree = map { chomp; $_ } <$fd>;
2135         close $fd or die_error(undef, "Reading diff-tree failed.");
2136
2137         # non-textual hash id's can be cached
2138         my $expires;
2139         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2140                 $expires = "+1d";
2141         }
2142         my $refs = read_info_ref();
2143         my $ref = git_get_referencing($refs, $co{'id'});
2144         my $formats_nav =
2145                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
2146         git_header_html(undef, $expires);
2147         git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2148         git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2149         print "<div class=\"page_body\">\n";
2150         my $comment = $co{'comment'};
2151         my $empty = 0;
2152         my $signed = 0;
2153         my @log = @$comment;
2154         # remove first and empty lines after that
2155         shift @log;
2156         while (defined $log[0] && $log[0] eq "") {
2157                 shift @log;
2158         }
2159         foreach my $line (@log) {
2160                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2161                         next;
2162                 }
2163                 if ($line eq "") {
2164                         if ($empty) {
2165                                 next;
2166                         }
2167                         $empty = 1;
2168                 } else {
2169                         $empty = 0;
2170                 }
2171                 print format_log_line_html($line) . "<br/>\n";
2172         }
2173         print "<br/>\n";
2174         foreach my $line (@difftree) {
2175                 # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M      ls-files.c'
2176                 # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M      rev-tree.c'
2177                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2178                 my $from_mode = $1;
2179                 my $to_mode = $2;
2180                 my $from_id = $3;
2181                 my $to_id = $4;
2182                 my $status = $5;
2183                 my $file = validate_input(unquote($6));
2184                 if ($status eq "A") {
2185                         print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
2186                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id) . "(new)" .
2187                               "</div>\n";
2188                         git_diff_print(undef, "/dev/null", $to_id, "b/$file");
2189                 } elsif ($status eq "D") {
2190                         print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
2191                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) . "(deleted)" .
2192                               "</div>\n";
2193                         git_diff_print($from_id, "a/$file", undef, "/dev/null");
2194                 } elsif ($status eq "M") {
2195                         if ($from_id ne $to_id) {
2196                                 print "<div class=\"diff_info\">" .
2197                                       file_type($from_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$from_id;hb=$hash;f=$file")}, $from_id) .
2198                                       " -> " .
2199                                       file_type($to_mode) . ":" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$to_id;hb=$hash;f=$file")}, $to_id);
2200                                 print "</div>\n";
2201                                 git_diff_print($from_id, "a/$file",  $to_id, "b/$file");
2202                         }
2203                 }
2204         }
2205         print "<br/>\n" .
2206               "</div>";
2207         git_footer_html();
2208 }
2209
2210 sub git_commitdiff_plain {
2211         mkdir($git_temp, 0700);
2212         open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
2213                 or die_error(undef, "Open git-diff-tree failed.");
2214         my @difftree = map { chomp; $_ } <$fd>;
2215         close $fd or die_error(undef, "Reading diff-tree failed.");
2216
2217         # try to figure out the next tag after this commit
2218         my $tagname;
2219         my $refs = read_info_ref("tags");
2220         open $fd, "-|", $GIT, "rev-list", "HEAD";
2221         my @commits = map { chomp; $_ } <$fd>;
2222         close $fd;
2223         foreach my $commit (@commits) {
2224                 if (defined $refs->{$commit}) {
2225                         $tagname = $refs->{$commit}
2226                 }
2227                 if ($commit eq $hash) {
2228                         last;
2229                 }
2230         }
2231
2232         print $cgi->header(-type => "text/plain", -charset => 'utf-8', '-content-disposition' => "inline; filename=\"git-$hash.patch\"");
2233         my %co = git_read_commit($hash);
2234         my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
2235         my $comment = $co{'comment'};
2236         print "From: $co{'author'}\n" .
2237               "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n".
2238               "Subject: $co{'title'}\n";
2239         if (defined $tagname) {
2240                 print "X-Git-Tag: $tagname\n";
2241         }
2242         print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
2243               "\n";
2244
2245         foreach my $line (@$comment) {;
2246                 print "$line\n";
2247         }
2248         print "---\n\n";
2249
2250         foreach my $line (@difftree) {
2251                 $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/;
2252                 my $from_id = $3;
2253                 my $to_id = $4;
2254                 my $status = $5;
2255                 my $file = $6;
2256                 if ($status eq "A") {
2257                         git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
2258                 } elsif ($status eq "D") {
2259                         git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
2260                 } elsif ($status eq "M") {
2261                         git_diff_print($from_id, "a/$file",  $to_id, "b/$file", "plain");
2262                 }
2263         }
2264 }
2265
2266 sub git_history {
2267         if (!defined $hash_base) {
2268                 $hash_base = git_read_head($project);
2269         }
2270         my $ftype;
2271         my %co = git_read_commit($hash_base);
2272         if (!%co) {
2273                 die_error(undef, "Unknown commit object.");
2274         }
2275         my $refs = read_info_ref();
2276         git_header_html();
2277         git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2278         git_header_div('commit', esc_html($co{'title'}), $hash_base);
2279         if (!defined $hash && defined $file_name) {
2280                 $hash = git_get_hash_by_path($hash_base, $file_name);
2281         }
2282         if (defined $hash) {
2283                 $ftype = git_get_type($hash);
2284         }
2285         git_print_page_path($file_name, $ftype);
2286
2287         open my $fd, "-|",
2288                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2289         print "<table cellspacing=\"0\">\n";
2290         my $alternate = 0;
2291         while (my $line = <$fd>) {
2292                 if ($line =~ m/^([0-9a-fA-F]{40})/){
2293                         my $commit = $1;
2294                         my %co = git_read_commit($commit);
2295                         if (!%co) {
2296                                 next;
2297                         }
2298                         my $ref = git_get_referencing($refs, $commit);
2299                         if ($alternate) {
2300                                 print "<tr class=\"dark\">\n";
2301                         } else {
2302                                 print "<tr class=\"light\">\n";
2303                         }
2304                         $alternate ^= 1;
2305                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2306                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2307                               "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"}, "<b>" .
2308                               esc_html(chop_str($co{'title'}, 50)) . "$ref</b>") . "</td>\n" .
2309                               "<td class=\"link\">" .
2310                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
2311                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
2312                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=$commit;f=$file_name")}, "blob");
2313                         my $blob = git_get_hash_by_path($hash_base, $file_name);
2314                         my $blob_parent = git_get_hash_by_path($commit, $file_name);
2315                         if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
2316                                 print " | " .
2317                                 $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff;h=$blob;hp=$blob_parent;hb=$commit;f=$file_name")},
2318                                 "diff to current");
2319                         }
2320                         print "</td>\n" .
2321                               "</tr>\n";
2322                 }
2323         }
2324         print "</table>\n";
2325         close $fd;
2326         git_footer_html();
2327 }
2328
2329 sub git_search {
2330         if (!defined $searchtext) {
2331                 die_error("", "Text field empty.");
2332         }
2333         if (!defined $hash) {
2334                 $hash = git_read_head($project);
2335         }
2336         my %co = git_read_commit($hash);
2337         if (!%co) {
2338                 die_error(undef, "Unknown commit object.");
2339         }
2340         # pickaxe may take all resources of your box and run for several minutes
2341         # with every query - so decide by yourself how public you make this feature :)
2342         my $commit_search = 1;
2343         my $author_search = 0;
2344         my $committer_search = 0;
2345         my $pickaxe_search = 0;
2346         if ($searchtext =~ s/^author\\://i) {
2347                 $author_search = 1;
2348         } elsif ($searchtext =~ s/^committer\\://i) {
2349                 $committer_search = 1;
2350         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2351                 $commit_search = 0;
2352                 $pickaxe_search = 1;
2353         }
2354         git_header_html();
2355         git_page_nav('','', $hash,$co{'tree'},$hash);
2356         git_header_div('commit', esc_html($co{'title'}), $hash);
2357
2358         print "<table cellspacing=\"0\">\n";
2359         my $alternate = 0;
2360         if ($commit_search) {
2361                 $/ = "\0";
2362                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2363                 while (my $commit_text = <$fd>) {
2364                         if (!grep m/$searchtext/i, $commit_text) {
2365                                 next;
2366                         }
2367                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2368                                 next;
2369                         }
2370                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2371                                 next;
2372                         }
2373                         my @commit_lines = split "\n", $commit_text;
2374                         my %co = git_read_commit(undef, \@commit_lines);
2375                         if (!%co) {
2376                                 next;
2377                         }
2378                         if ($alternate) {
2379                                 print "<tr class=\"dark\">\n";
2380                         } else {
2381                                 print "<tr class=\"light\">\n";
2382                         }
2383                         $alternate ^= 1;
2384                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2385                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2386                               "<td>" .
2387                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" . esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2388                         my $comment = $co{'comment'};
2389                         foreach my $line (@$comment) {
2390                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2391                                         my $lead = esc_html($1) || "";
2392                                         $lead = chop_str($lead, 30, 10);
2393                                         my $match = esc_html($2) || "";
2394                                         my $trail = esc_html($3) || "";
2395                                         $trail = chop_str($trail, 30, 10);
2396                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2397                                         print chop_str($text, 80, 5) . "<br/>\n";
2398                                 }
2399                         }
2400                         print "</td>\n" .
2401                               "<td class=\"link\">" .
2402                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2403                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2404                         print "</td>\n" .
2405                               "</tr>\n";
2406                 }
2407                 close $fd;
2408         }
2409
2410         if ($pickaxe_search) {
2411                 $/ = "\n";
2412                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
2413                 undef %co;
2414                 my @files;
2415                 while (my $line = <$fd>) {
2416                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
2417                                 my %set;
2418                                 $set{'file'} = $6;
2419                                 $set{'from_id'} = $3;
2420                                 $set{'to_id'} = $4;
2421                                 $set{'id'} = $set{'to_id'};
2422                                 if ($set{'id'} =~ m/0{40}/) {
2423                                         $set{'id'} = $set{'from_id'};
2424                                 }
2425                                 if ($set{'id'} =~ m/0{40}/) {
2426                                         next;
2427                                 }
2428                                 push @files, \%set;
2429                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
2430                                 if (%co) {
2431                                         if ($alternate) {
2432                                                 print "<tr class=\"dark\">\n";
2433                                         } else {
2434                                                 print "<tr class=\"light\">\n";
2435                                         }
2436                                         $alternate ^= 1;
2437                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2438                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2439                                               "<td>" .
2440                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}"), -class => "list"}, "<b>" .
2441                                               esc_html(chop_str($co{'title'}, 50)) . "</b><br/>");
2442                                         while (my $setref = shift @files) {
2443                                                 my %set = %$setref;
2444                                                 print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$set{'id'};hb=$co{'id'};f=$set{'file'}"), class => "list"},
2445                                                       "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
2446                                                       "<br/>\n";
2447                                         }
2448                                         print "</td>\n" .
2449                                               "<td class=\"link\">" .
2450                                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$co{'id'}")}, "commit") .
2451                                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$co{'id'}")}, "tree");
2452                                         print "</td>\n" .
2453                                               "</tr>\n";
2454                                 }
2455                                 %co = git_read_commit($1);
2456                         }
2457                 }
2458                 close $fd;
2459         }
2460         print "</table>\n";
2461         git_footer_html();
2462 }
2463
2464 sub git_shortlog {
2465         my $head = git_read_head($project);
2466         if (!defined $hash) {
2467                 $hash = $head;
2468         }
2469         if (!defined $page) {
2470                 $page = 0;
2471         }
2472         my $refs = read_info_ref();
2473
2474         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2475         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2476                 or die_error(undef, "Open git-rev-list failed.");
2477         my @revlist = map { chomp; $_ } <$fd>;
2478         close $fd;
2479
2480         my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
2481         my $next_link = '';
2482         if ($#revlist >= (100 * ($page+1)-1)) {
2483                 $next_link =
2484                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
2485                                  -title => "Alt-n"}, "next");
2486         }
2487
2488
2489         git_header_html();
2490         git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
2491         git_header_div('summary', $project);
2492
2493         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
2494
2495         git_footer_html();
2496 }
2497
2498 ## ......................................................................
2499 ## feeds (RSS, OPML)
2500
2501 sub git_rss {
2502         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
2503         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
2504                 or die_error(undef, "Open git-rev-list failed.");
2505         my @revlist = map { chomp; $_ } <$fd>;
2506         close $fd or die_error(undef, "Reading rev-list failed.");
2507         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2508         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2509               "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
2510         print "<channel>\n";
2511         print "<title>$project</title>\n".
2512               "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
2513               "<description>$project log</description>\n".
2514               "<language>en</language>\n";
2515
2516         for (my $i = 0; $i <= $#revlist; $i++) {
2517                 my $commit = $revlist[$i];
2518                 my %co = git_read_commit($commit);
2519                 # we read 150, we always show 30 and the ones more recent than 48 hours
2520                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
2521                         last;
2522                 }
2523                 my %cd = date_str($co{'committer_epoch'});
2524                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
2525                 my @difftree = map { chomp; $_ } <$fd>;
2526                 close $fd or next;
2527                 print "<item>\n" .
2528                       "<title>" .
2529                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
2530                       "</title>\n" .
2531                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
2532                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
2533                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
2534                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
2535                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
2536                       "<content:encoded>" .
2537                       "<![CDATA[\n";
2538                 my $comment = $co{'comment'};
2539                 foreach my $line (@$comment) {
2540                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
2541                         print "$line<br/>\n";
2542                 }
2543                 print "<br/>\n";
2544                 foreach my $line (@difftree) {
2545                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
2546                                 next;
2547                         }
2548                         my $file = validate_input(unquote($7));
2549                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
2550                         print "$file<br/>\n";
2551                 }
2552                 print "]]>\n" .
2553                       "</content:encoded>\n" .
2554                       "</item>\n";
2555         }
2556         print "</channel></rss>";
2557 }
2558
2559 sub git_opml {
2560         my @list = git_read_projects();
2561
2562         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
2563         print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
2564               "<opml version=\"1.0\">\n".
2565               "<head>".
2566               "  <title>$site_name Git OPML Export</title>\n".
2567               "</head>\n".
2568               "<body>\n".
2569               "<outline text=\"git RSS feeds\">\n";
2570
2571         foreach my $pr (@list) {
2572                 my %proj = %$pr;
2573                 my $head = git_read_head($proj{'path'});
2574                 if (!defined $head) {
2575                         next;
2576                 }
2577                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
2578                 my %co = git_read_commit($head);
2579                 if (!%co) {
2580                         next;
2581                 }
2582
2583                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
2584                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
2585                 my $html = "$my_url?p=$proj{'path'};a=summary";
2586                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
2587         }
2588         print "</outline>\n".
2589               "</body>\n".
2590               "</opml>\n";
2591 }